Hinge



i l Y 1,627,274 i May 3 1927 T. H. COSTELLO HNGE Filed ann T1920 I 2 sheets-sheen 1 6?I////.I// i '/-6- /agi ` May 3,1927,

HINGE Filed June a7. I 4o 4, 1920 2 sheets-sheet 2 Patented May 3, `1927.

1,627,274 l PATENT .01E-.INCE

THOMAS H. `COSVIIlLLCi), OF CHICAGO,r ILLINOIS; -ROSE M. COSTELLO AND WILLIAM COSTELLO,I EXEC'UTORS OF SAID THOMAS H. COSTELLO, DEOEASED, .A'SSIGNORS T0 ROSE M. COSTELLO, TRUSTEE.

Application med `:rune 4,

My invention relates to movable` stands in which a display panel is rotatively mount,- i

tated to change the inclination thereof or to display alternatively one or the other of the two` faces. i f

When such devices are set for use, it is necessary that the pivotal connection shall be adapted tobe tightened so that theboard or panel shall retain avrigid position relativelyto the supports while in use or while work is beingdone thereon. has usually been provided by screw threaded bolts, passing through the supports and taking .into screw threaded members rigidly attachedto the swinging frame, `hand pieces being provided for tightening or loosening the bolts. The objectionable feature of this construction consists'in-the fact that, when the ordinarily right-handed screw threaded pivots are tightened to give suliicient tension, a partial revolution of the panel to change the angular vinclination thereof or to display the other `end to tighten, a condition which causes uncertain adjustment and frequently results inbreaking the apparatus and tearing the panel from its supports. i j It is one object of myinvention to provide simple, cheap, and etlicient means for pivota'lly securing a display board or panel upon a supporting frame in such manner that it `may be readily turned to any angle of inclination upon `the pivot hinges, or rotated to `d isplay either side as desired; it is a further object of my invention to providepivot hinges ortrunnions for the board or panel, `which may be detachable from each other 'whereby the board'or panel may be connected vor detached from thesupports, and to provide a hinge or trunnion', theparts of which may be adjusted in frictional or clampingengagement at any' degree of tension and in which the parts are so positively held in such relation, that relativerotation in either directionwill not vary thextension at which they are setL The principles of lmyinvention are lillus- This tension HINGE.

1920. serial No. 386,642.

trated in the drawings in which Figure '.1 is

a front elevation of` a black-board of knockdown construction and including a swing ing panel; Figure 2 is an enlarged detail elevation, partly in section, showing` the interlocking connection between the ciossbar and one of the standards.` Figure 3 is an elevation, partly in section, taken onl the line 3-3 of Figure 2, thebracket being removed; Figure 4ly is a sectional View showing one -form of my improved pivot hinge, and Figurey 5 .is a similar view, but showing another form thereof.

Like igures designate corresponding parts throughout the drawings.

Referring to the drawings, the black-V board structure includes a blackboard A' anda pair of standards the blackboard including a frame having end members 6-'6 normally arranged inl parallelism with the standards. The blackeboard is detachably connected to the upper ends ofthe standards by pivotliinges, each of which is represented as a wholeby the letter B.

Below the black-board the standardsare detachably connected by a cross-bar or chalk-rail 7, whichacts as a brace therefor.

This crossbar lTis fitted between the standf y `ing to the number oflugs 9 on each bracket.

Each opening 12 includes a relatively large upper opening l2a and a relatively small or restricted lower opening 12b. The upper openingl l2 is of a` sizeto receive the head" 9a of thecorresponding lug, while thel lower or restricted opening 12b is of a size toireceive only the neck 910 of said lug.

In assembling the `cross-bar 7 and the standards '55, the heads 9a of the lugs 9 of the brackets 8-8 are inserted through the corresponding upper openings 12a of the ,plateslL and a downward pressure is eX- erted on the cross-bar. l"Ihis downward.

movement of the cross-bar will cause the necks 9h of the lugs 9 to be moved into the lower or restricted openings 12b oit the plate 11.

In order to retain the cross-bar 7 against becoming accidentally disconnected pawls 13, 13 are respectively pivoted at their upper ends tothe standards by screws 14 so that they may be swung downwardly to engage the chalk-rail 7 and lock it in place.

Each of the hinges B includes a relatively stationary member 17 and a relatively movable member or head 18. The stationary member 17 is positioned against the inner face of the standard 5 and is provided with i upper and lower lugs 19, which fit into correspondingly sized recesses formed in the inner face of the standard, and not only prevent swinging movements of the member, but also4 form a detachable and an interlocking connection between said stationary member and the standard. Centrally formed in the stationary member 17 is an angular' opening 20. Formed on the'outer face of the member 17 is an annular` bearing rib 21 which surrounds the opening 2O and is spaced therefrom.

`The relative movable member or head 18 isprovided with a hollow boss 22 which extends towards the stat-ionary member 17, and this boss is formed at its outer end with an annular seat 23 for receiving the annular bea-ring rib 21 of the stationary member 17. The end of the boss 22 is provided with an opening'24 which is arranged concentrically to the annular seat- 23. The diameter of this opening 24 is greater than the width in any direction of the angular opening 20 of the stationary member 17. The member 18'is secured `to the end member 6 of the blackboard A by screws 25.V The member 1S is iurthermore provided with llanges 26 which engage the front and rear Yfaces of the end member 6. These flanges relieve the attaching screws oi all strain when pressure is exerted on the black-board or panel A. From the foregoing it will be observed that the relatively stationary and movable members 17 and 18 may be conjointly formed with an annular bearingsnrface.

Referring to the construction shown in Figure 4, a clampingscrew or bolt 27 is provided with a hand-wheel 28 having a shoulder 29 for engagement with a wear-plate 30 secured to the outer face of the standard 5.

The clamping screw extends lthrough an n* opening 31 formed' in the standard 5 and carries at its inner end a flange 32 which is arranged within the hollow boss22 and has a diameter larger than the opening 24 of said boss. In this particular construction, the flange 32 is formed with an integral and angular shank 33 adapted to fitthe opening 2() of' the stationary member 17, so as to prevent rotation of the flange 32. This combined flange and shank is formed with a i i threaded bore for receiving the screw 27. The end ofthe shank 33 opposite the `flange 32 may be provided with a flange 34 which engages the outer -face ofthe member 17 and prevents disengagcn'lent therefrom; lt will thus be seen that'the flanges 32 and 34 are` tion.

A somewhat diilierent construction is i1lustrated in' Figure 5. A clamping screw or bolt 35 is provided at its inner end with an integral llange 36, and adjacent'said flange the bolt is provided with an angular' Aportion 37 which fitsv within the angular opening 2() and retains the flange 36` and also the bolt from turning. Adjacent the angular portion 37.7the bolt isformed with spaced ears 38--38which engage theonter face of the stationary member 17 The ears 38 constitute a flange or a stop. As a result, the relatively stationary member 17 andthe relatively movable member 18 are retained between the flange 36 and the .flange formed by the ears 38. A hand-wheel 39 is separate from the clamping'bolt 35,-but has threaded engagement with the outwardly projecting end thereof. This'hand-wheel is also provided with a shoulder 40 which bears against the bearingor wear plate 30. It will thus be seen that upon tnrningmovement of the hand-wheel 39 in the proper direction, an

loo

endwise movement will `be imparted to `the clamping bolt 35, and the non-rotatable flange 36, which is carriedA thereby,pwill engage the hollow boss of the relatively movable member 18 so as to cause said hinge members 17 and 18 to be securely clamped against. turning movements in either direction. v

From the foregoing it will bevseen that the black-board A may be readily connected or disconnected fromthe standards by removing the bolt 27 of the construction shown in Figure 4, or by removingthe handewheel 39 of the construction shown in Figure 5. It will also be seen that when the blackboard is adjusted at any predetermined angle, and the hinge members 17 and 18 securely clamped together', there will be no tendency of either of the hinges B-B being loosened due to pressure being exerted on the black-board either above 'or below the horizontal plane containing the hinges.

It isl manifest that the principles of my invention are Vof much broader application than to black-boardsalone. And they may be applied to other uses, as 4on mirrors, and the like, where a non-binding, adjustable, pivoted connection is desired.

l. In a hinge, a pair ot' taoially Contacting hinge members, one of which is station; ary and the other rotatable relative thereto, there being registering openings in the hinge members, a securing bolt for the hinge members embodying a key portion non-rotatable and slidable through the stationary member and both rotatable and slidable through the rotatable hinge member for holding the later against rotatable movem ment, and means formed integral with the bolt and cooperating with the vouter side ot the two hinged membersto hold'the hinged members and iirst named means in assembled formation.

2. In a hinge, a pair of aeially contacting hinge members, one ot' which is stationary and the other rotatable relative thereto, there being registering openings in the hinge members, a securing bolt for the hinge members embodying a key portion non-rotatable and slidable through the stationary member and both rotatable and slidable through the rotatable hinge member, means on thebolt engaging the outer tace ot' the rotatable member to move the same into frietional binding engagement with Vthe stationary member to hold the rotatable member against movement, and spring ears on the bolt engaging the exposed tace ot the stationary member to cooperate with the last named means.

3. In a pivot hinge, the combination of relatively stationary and movable members i 'said flange.

t. In a hinge, a pair of faoially contacting hinge members, one ot' which is stationary and the other rotatable relativeithereto, the stationary member having an opening therein of polygonal formation and the rotatable meniber having a registering opening of a mean diameter greater than the eXtreme diameter of the opening in the stationary member, a bolt extending through the hinge members, flange on one end of the bolt ior engagement With the outer face of the rotatable member and ears on the bolt spaced trom the flange and positioned for engagement with the outer tace of the stationary member to hold the two hinge members assembled. f y

In witness whereof.l I have hereto set my hand at Chicago, Illinois, this 29th day of May, 192th i THOMAS H. COSTELLO. 

